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In previous Call of Duty games, players were able to choose up to three different killstreak rewards, and were awarded them after killing a certain number of enemies in a row without dying. Those killstreaks were independent of the player's custom classes. In the Strike Chain system, however, killstreaks have been replaced by Pointstreaks, which are awarded to players for accumulating a certain number of points. Another difference from past reward systems is points being gained not only by killing opponents, but also for shooting down air support, and completing objectives, such as capturing a position in Domination.

Pointstreaks are divided into three Strike Packages - Assault, Support, and Specialist. Strike Packages are attached to custom classes, and a Strike Chain can only be formed from pointstreaks from the same Strike Package.

On April 8, 2014, Call of Duty: Ghosts's meter function was changed to reward players better when they actually play the objectives. In Kill Confirmed, or any game mode with tags, players will be rewarded with "half a point" for collecting a tag, friends' or foes'. In Domination, any and every play that captures a flag, whether or not they were the first player to on the flag, will be rewarded with "half a point" in their pointstreak.

The Assault Strike Package includes pointstreak rewards more suited to inflicting damage on opposing players. When using this strike package, kills acquired through pointstreaks give points toward newer pointstreaks, and all accumulated points are reset when the player reaches their last pointstreak, or when the player is killed.

Deploy an unmanned aerial surveillance drone to pinpoint enemy position on the map as red dots for 30 seconds. Three of these drones active at once acts as the Advanced UAV from the Support Strike Package.

Call in a Hellfire Predator Missile that will target a spot on the map. Can be destroyed with the Trophy System or the EMP killstreak while in mid air. It can destroy enemy killstreaks like the Reaper and AC-130, but extreme precision must be used to do so.

Control a Reaper UAV from a laptop that carries fourteen AGMs (Air to Ground Missiles) that you can guide via laser sight on the Reaper drone. Active for 45 seconds, until all 14 AGMs are used or until shot down, whichever is sooner. Carries one set of flares for protection against enemy missiles. Can destroy enemy killstreaks.

Call in a Assault Drone by airdrop that carries a machine gun and a grenade launcher on it. The grenades replenish automatically after a short duration of time. Active for about a minute or until destroyed, whichever is sooner. Can be destroyed by any missile launcher.

Be the gunner of a Lockheed AC-130 "Angel of Death" Aircraft and have access to three gun cannons that rain massive firepower on your enemies below. Carries two sets of flares for protection against enemy missiles. The AC-130 takes no gunfire damage from enemies so it can only be destroyed by the EMP killstreak, SAM Turrets, SMAW, Javelin, Predator Missile or Stinger launchers. Can also destroy enemy killstreaks.

Deploy a ground satellite to pinpoint enemy position in the players and allies' line of sight on the map as red dots. Two of these sweep the map to show enemy players. Three of these sweep faster. Four of these act as an Advanced UAV.

Call a German Shepherd onto the map, he will follow the player similarly to the AH-6 Overwatch. When the Dog is near enemies, he will growl or bark, notifying the player. The Guard Dog will also attack enemy players.

Once obtained from a dropped care package, players will receive a juggernaut like armor and a Combat Knife along with a Throwing Knife. The Maniac also runs much faster than Regular Players. (Stated by the loading intel "You can't outrun a Maniac")

The Support Strike Package includes pointstreak rewards more suited to assisting the player's team. When using this strike package, kills acquired through pointstreaks do NOT give points toward newer pointstreaks, and all accumulated points are ONLY reset when the player reaches their last pointstreak; not upon death.

In the Specialist Strike Package, players choose perks to be awarded instead of pointstreaks. When using this strike package, the perks are given to the player at 2, 4, and 6 points, or 1, 3, and 5 with Hardline. The player may place any additional perk (excluding Overkill) at any place in their Strike Chain. In addition, if the player reaches 8 points, or 7 with Hardline, they are awarded every remaining perk in the game, again excluding Overkill. Every applicable proficiency for any weapon the player is using will be awarded to one (besides Damage, Breath, or Attachments, unless already equipped). All benefits are lost on death.

The M.O.A.B. (Massive Ordinance Air Blast/Mother Of All Bombs) is a hidden killstreak reward obtainable with any strike package in Modern Warfare 3. Obtaining it requires 25 kills in one life (24 with Hardline). Once called in, there is a ten second countdown, after which it kills every enemy player in the open when it hits, destroys all killstreaks on the enemy team or in Free-for-All all enemy pointstreaks in the Air or Ground minus the Airdrop Trap and causes an EMP effect for the opposing team for one minute. The team, or the player in Free for All, that deployed it also gains double XP for the rest of the match. The M.O.A.B. is the spiritual successor to the Tactical Nuke. However, unlike the Tactical Nuke, the M.O.A.B. will not end the game. It should be noted that the M.O.A.B. can only be acquired with direct kills from the player, not by shooting down air support, completing objectives, or getting other kills with other pointstreak rewards. Note that the EMP pointstreak from the Support Strike Package cannot destroy this killstreak after it has been called in, but only prevent it from being called in.